I like that it's set in what appears to be basically a military academy rather than putting the girls on the front lines. In fact, it's pretty much a typical Yuri all girls school setting, with some steampunk and si-fi elements (YMMV on whether this is a good thing.)

To the extent that the stories aren't about Yuri, rather than being themed around combat or an attempted overall story, they are (thankfully, I think) unrelated and centered around typical peacetime exercises, such as repairing and maintaining mecha and training drills. Think Battle Athletes Daiundoukai more than Strike Witches.

I said thankfully because the stories barely have time for the romance as is. Unfortunately, the stories don't live up to the art and premise (both of which I like.) Each chapter focuses on a different couple, and the small number of pages mean things move extremely fast. No one hates drawn out courtships more than me, but I'm talking people going from being on bad terms all of a sudden becoming a couple after like one conversation. It feels very rushed.

The best of the chapters released is definitely chapter two, probably because (no surprise) it starts with two girls who are actually on good terms and have a relationship (not a romantic one, but a close friendship) so the confession felt more natural to me, I guess.

Edit: I forgot to mention the fourth story, by far the worst and which I had deleted and forgot about. It's one of the eye-rollingly stupid and melodramatic "I barely know her but she's the light of my life" stories which are the scourge of this genre. The characters are idiots, and the setting is different than the other stories (just to top of the pointless depressing digression that is story four.) It feels terribly out of place next to the other stories, and I'd recommend skipping it altogether.